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September 17, 2014

September 17, 2014

Posted by **Matt** on Wednesday, June 10, 2009 at 7:30pm.

<A is in standard position on a unit circle. Point P (-1/2, -√3/2) is the point of intersection of its terminal side with the unit circle. Find the measure of <A in radians.

- trig -
**Allan**, Monday, June 15, 2009 at 10:06amSince the angle in in QIII, use the cos=- 1/2 and sin= -sqrt3/2 and the inverse tan function on your calculator since tan is the y/x and is equal to -sqrt3. angle is 60

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